Given :
A rectangle with a length of 3 x and height of x. If Kyle uses 18 feet of wood to make the frame.
To Find :
The length of the frame.
Solution :
We know, perimeter of the rectangle is given by :
Now, it is given that 18 feet of wood is used.
So,
Therefore, length of frame is given by 3x = 6.75 feet.
Hence, this is the required solution.